Shock insulation lower buttress steel bar mounting equipment and method

Abstract

The invention relates to the technical field of buttress steel bars, in particular to shock insulation lower buttress steel bar installation equipment and method. According to the technical scheme, the device comprises a circular plate fixed to the front side of an alternating current welding machine through a cable, a current knob is fixedly installed at the top of the circular plate and electrically connected with a welding handle through a cable, a clamp for clamping reinforcing steel bars is arranged in the circular plate, and a rotating plate is rotationally connected to the center of the interior of the circular plate. The steel bar is clamped through the first clamping plate and the second clamping plate, four contact plates provide four-point supporting, the diameter range of the matched steel bar of the clamp is enlarged, the thicker the steel bar is, the larger the section is, the larger the opening and closing angle of the first clamping plate and the second clamping plate is, the rotating angle of the fan-shaped rotating block and the rotating plate driven by the second clamping plate is, and therefore a current knob rotates to increase current; on the contrary, the thinner the steel bar is, the smaller the rotation angle of the current knob is, the smaller the current is, thereby providing the current adapting to the thickness of the steel bar and improving the steel bar installation efficiency.

Description

Technical Field

[0001] This invention relates to the field of reinforcement technology for pier supports, and in particular to a device and method for installing reinforcement in seismic isolation pier supports. Background Technology

[0002] Earthquakes are extremely destructive natural disasters that seriously threaten human life and property. In seismic isolation building systems, the seismic isolation underbearing is a key force-transmitting component connecting the superstructure and the seismic isolation bearings. Its structural stability and construction quality directly determine the overall seismic performance of the seismic isolation system.

[0003] There are significant technical challenges in the current installation of steel reinforcement in seismic isolation piers: due to the large diameter of the vertical steel reinforcement in the pier (usually 20-32mm), and the design requirements for reserving a long bent anchorage section at the upper end (such as a 90° bend anchorage of 12d, where d is the diameter of the steel reinforcement), the vertical steel reinforcement, horizontal stirrups, embedded sleeves of the seismic isolation bearing, and embedded anchor bars form a complex node with dense intersecting structures in space.

[0004] During the installation of reinforcing bars, welding is required. The AC welding machine used for welding reinforcing bars requires workers to measure the diameter of the reinforcing bars and then adjust the current, which affects the efficiency of the reinforcing bar installation. Summary of the Invention

[0005] The purpose of this invention is to address the problem in the prior art that on-site cutting and adjustment of reinforcing bars damages the integrity of the reinforcing bar structure and seriously reduces installation efficiency, and to propose a device and method for installing reinforcing bars in seismic isolation piers.

[0006] On one hand, the present invention provides a rebar installation device for seismic isolation piers, including an AC welding machine, wherein the bottom of the AC welding machine is rotatably connected to casters, a welding handle is fixedly installed on the front side of the AC welding machine via a cable, and a push handle is fixedly installed on the back of the AC welding machine, and further includes: The current adaptation unit includes a circular plate fixed to the front side of an AC welding machine via a cable. A current knob is fixedly installed on the top of the circular plate. The current knob is electrically connected to the welding torch via a cable. A clamp for clamping reinforcing bars is provided inside the circular plate. A rotating plate is rotatably connected to the center of the circular plate. The rotating plate is fixedly connected to the clamp and to the rotating part of the welding torch. The circular plate has a fixed engagement part inside for the opening and closing angle of the positioning clamp.

[0007] Optionally, the clamp includes a first clamping plate fixedly installed inside the circular plate, a second clamping plate fixedly installed on the outer wall of the rotating plate, and a contact plate fixedly installed on the side of the second clamping plate and the first clamping plate facing each other.

[0008] Optionally, two contact plates are fixedly installed on both the first and second clamping plates, and when the clamp clamps the reinforcing bars, the reinforcing bars are located between the two contact plates.

[0009] Optionally, a fan-shaped rotating block is fixedly installed at the end of the second clamping plate. The inner arc surface of the fan-shaped rotating block is fixedly connected to the rotating plate. The circular plate, the rotating plate, the current knob, and the fan-shaped rotating block are coaxial.

[0010] Optionally, the fixed engagement part includes a ratchet fixedly installed on the outer arc surface of the fan-shaped rotating block, and the inner wall of the circular plate is provided with a clearance groove, and a baffle is provided inside the clearance groove to prevent the ratchet from rotating.

[0011] Optionally, multiple ratchet teeth are provided and are distributed at equal angles along the outer arc surface of the fan-shaped rotating block, and the baffle is located on the rotation path of the ratchet teeth.

[0012] Optionally, a spring sheet is fixedly installed on the side of the baffle. The spring sheet has a V-shaped structure and slides inside the circular plate along the axis of the circular plate.

[0013] Optionally, a cylindrical insert is slidably connected inside the circular plate, and the outer wall of the cylindrical insert is fixedly connected to a spring plate.

[0014] Optionally, a helical spring is elastically connected between the end of the cylindrical insert and the circular plate, and the end of the cylindrical insert extends from the top of the circular plate.

[0015] On the other hand, the present invention proposes a method for installing the reinforcing steel bars of a seismic isolation pier, which is applied to the above-mentioned equipment for installing the reinforcing steel bars of a seismic isolation pier. The steps are as follows: S1. Use CAD technology to fully verify the spatial relationship between the lower support reinforcement and the pre-embedded sleeve and pre-embedded anchor bar of the seismic isolation bearing, and check for any collisions or positional conflicts. S2. Fabrication of the lower support reinforcement: Leave a straight section at the top of the vertical reinforcement. Position and mark the lower support, accurately measure and mark the plane position, outline and elevation control line of the lower support as the reference for the installation of the lower support reinforcement. S3. According to the design requirements of the construction drawings, install the bottom plate and the foundation reinforcement in sequence. First install the bottom layer reinforcement, then install the top layer reinforcement. Weld the reinforcement to ensure the stability of the reinforcement cage. S4. According to the markings of the lower support pier positioning line, accurately insert the prepared vertical steel bars into the steel reinforcement cage of the bottom plate and the foundation, and use welding to reliably fix the vertical steel bars to avoid displacement in subsequent concrete pouring or other construction stages. S5. After the installation of the bottom slab and foundation reinforcement and related concealed works have passed the acceptance inspection, concrete pouring construction shall be carried out. During the pouring process, a vibrator shall be used to compact the concrete to ensure that the concrete and reinforcement are tightly bonded. At the same time, care shall be taken to protect the vertical reinforcement to prevent it from shifting during the pouring process. S6. After the concrete of the base slab and the foundation has initially set, the lower support pier is laid out for the second time according to the original control axis and the design dimensions of the lower support pier. This provides a more accurate benchmark for the installation of the stirrups of the lower support pier and subsequent construction. The bending position of the upper end of the longitudinal steel bar of the lower support pier is marked, and the upper end of the longitudinal steel bar of the lower support pier is bent at ninety degrees. S7. Measure the position and level of the positioning plate, preliminarily install the bolts and sleeves on the positioning plate according to the design position, and pre-tighten them. Fix the anchor bars, sleeves, and positioning plate of the lower support pier. S8. Conduct a comprehensive inspection of the installation of the lower support pier reinforcement and related components. After confirming that all installation contents meet the design and specification requirements, complete the installation of the lower support pier reinforcement.

[0016] Compared with the prior art, this application includes at least one of the following beneficial technical effects: This invention uses a first clamping plate and a second clamping plate to clamp the reinforcing bar, and four contact plates to provide four-point support, thereby increasing the range of reinforcing bar diameters that the clamp can accommodate. The thicker the reinforcing bar and the larger its cross-section, the greater the opening angle of the first clamping plate and the second clamping plate. The second clamping plate drives the fan-shaped rotating block and the rotating plate to rotate at a large angle, thereby increasing the current knob. Conversely, the thinner the reinforcing bar, the smaller the rotation angle of the current knob and the smaller the current. This allows the clamp to provide a current that is suitable for the thickness of the reinforcing bar, thus improving the efficiency of reinforcing bar installation.

[0017] When the reinforcing bar is clamped between the first clamping plate and the second clamping plate, the first clamping plate and the second clamping plate cannot reduce the opening due to the presence of the reinforcing bar. At the same time, the baffle hinders the movement of the ratchet and restricts the first clamping plate and the second clamping plate from expanding the opening. At this time, the clamping opening is fixed to avoid the clamping angle being changed by external force, which would cause the current to change and cause the welding instability problem. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure for the installation of steel reinforcement in a seismic isolation pier. Figure 2 This is a schematic diagram of the welding torch structure; Figure 3 This is a schematic diagram of the contact plate structure; Figure 4 This is a cross-sectional view of the circular plate structure; Figure 5 for Figure 4 Enlarged schematic diagram of the ratchet structure in part A Figure 6 This is a schematic diagram of a method for installing reinforcing steel bars in a seismic isolation pier.

[0019] Reference numerals: 1. AC welding machine; 2. Caster wheel; 3. Welding handle; 4. Push handle; 5. Current adaptation part; 51. Circular plate; 52. First clamping plate; 53. Current knob; 54. Rotating plate; 55. Second clamping plate; 56. Fan-shaped rotating block; 57. Contact plate; 6. Fixed engagement part; 61. Ratchet; 62. Clearance groove; 63. Baffle; 64. Spring plate; 65. Cylindrical insertion rod; 66. Helical spring. Detailed Implementation

[0020] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0021] Example: A device and method for installing reinforcing steel bars in a seismic isolation pier, such as... Figure 1 As shown, the AC welding machine 1 is equipped with casters 2 rotatably connected to the bottom of the AC welding machine 1 for easy transport. A welding torch 3 is fixedly installed on the front of the AC welding machine 1 via a cable. A push handle 4 is fixedly installed on the back of the AC welding machine 1 to facilitate workers to push the AC welding machine 1.

[0022] The AC welding machine 1 has a current adaptation unit 5 on its front side. The current adaptation unit 5 includes a circular plate 51 fixed to the front side of the AC welding machine 1 via a cable. A current knob 53 is fixedly installed on the top of the circular plate 51. The current knob 53 is electrically connected to the welding torch 3 via a cable. The welding torch 3 clamps the welding rod and welds the reinforcing bars.

[0023] The circular plate 51 has a clamp for clamping reinforcing bars inside. A rotating plate 54 is rotatably connected to the center of the circular plate 51. The rotating plate 54 is fixedly connected to the clamp and to the rotating part of the welding torch 3. The clamp includes a first clamping plate 52 fixedly installed inside the circular plate 51, a second clamping plate 55 fixedly installed on the outer wall of the rotating plate 54, and a contact plate 57 fixedly installed on the side of the second clamping plate 55 and the first clamping plate 52 facing each other.

[0024] The first clamp 52 and the second clamp 55 are used to clamp the reinforcing bar. The diameter of the reinforcing bar determines the opening angle of the first clamp 52 and the second clamp 55. Two contact plates 57 are fixedly installed on the first clamp 52 and the second clamp 55. When the clamp clamps the reinforcing bar, the reinforcing bar is located between the two contact plates 57. The four contact plates 57 form a four-point support to improve the range of reinforcing bar diameters that the clamp can adapt to.

[0025] A fan-shaped rotating block 56 is fixedly installed at the end of the second clamping plate 55. The inner arc surface of the fan-shaped rotating block 56 is fixedly connected to the rotating plate 54. The circular plate 51, the rotating plate 54, the current knob 53 and the fan-shaped rotating block 56 are coaxial. During the opening and closing of the first clamping plate 52 and the second clamping plate 55, the second clamping plate 55 drives the fan-shaped rotating block 56 and the rotating plate 54 to rotate. The rotating plate 54 drives the rotating part on the current knob 53 to rotate, thereby adjusting the current.

[0026] Thinner steel bars have smaller cross-sections and are more susceptible to burning, thus requiring a smaller current. Conversely, thicker steel bars have larger cross-sections and require a larger current to achieve complete melting. The larger the opening angle of the first clamping plate 52 and the second clamping plate 55, the larger the diameter of the steel bar. The second clamping plate 55 drives the fan-shaped rotating block 56 and the rotating plate 54 to rotate at a larger angle, thereby causing the current knob 53 to rotate and increase the current. Conversely, the smaller the opening angle of the first clamping plate 52 and the second clamping plate 55, the smaller the diameter of the steel bar. The second clamping plate 55 drives the fan-shaped rotating block 56 and the rotating plate 54 to rotate at a smaller angle, thereby causing the current knob 53 to rotate at a smaller angle and the current to be smaller, thus preventing thin steel bars from burning through and thick steel bars from not melting completely.

[0027] This invention uses a first clamping plate and a second clamping plate to clamp the reinforcing bar, and four contact plates to provide four-point support, thereby increasing the range of reinforcing bar diameters that the clamp can accommodate. The thicker the reinforcing bar and the larger its cross-section, the greater the opening angle of the first clamping plate and the second clamping plate. The second clamping plate drives the fan-shaped rotating block and the rotating plate to rotate at a large angle, thereby increasing the current knob. Conversely, the thinner the reinforcing bar, the smaller the rotation angle of the current knob and the smaller the current. This allows the clamp to provide a current that is suitable for the thickness of the reinforcing bar, thus improving the efficiency of reinforcing bar installation.

[0028] The circular plate has a fixed engagement part for the opening and closing angle of the positioning clamp. The fixed engagement part includes a ratchet fixedly installed on the outer arc surface of the fan-shaped rotating block. The inner wall of the circular plate has a clearance groove, and a baffle that prevents the ratchet from rotating is provided inside the clearance groove.

[0029] Multiple ratchet teeth are provided and distributed at equal angles along the outer arc surface of the fan-shaped rotating block. The baffle is located on the rotation path of the ratchet teeth. When the second clamping plate drives the fan-shaped rotating block to rotate, the ratchet teeth on the fan-shaped rotating block are obstructed by the baffle, preventing the fan-shaped rotating block from being opened by external force. When the first and second clamping plates clamp the reinforcing bars, the presence of the reinforcing bars prevents the first and second clamping plates from reducing the opening. However, with the ratchet teeth and the baffle working together, the first and second clamping plates cannot expand the opening.

[0030] A spring plate is fixedly installed on the side of the baffle. The spring plate has a V-shaped structure and slides inside the circular plate along the axis of the circular plate. A cylindrical rod is slidably connected inside the circular plate. The outer wall of the cylindrical rod is fixedly connected to the spring plate. A helical spring is elastically connected between the end of the cylindrical rod and the circular plate. The end of the cylindrical rod extends from the top of the circular plate.

[0031] Pressing the cylindrical insert rod compresses the helical spring, causing the cylindrical insert rod to move and the spring plate and baffle to move. The baffle is misaligned with the ratchet, and the baffle no longer obstructs the movement of the ratchet, thereby expanding the opening angle of the first and second clamping plates.

[0032] When the reinforcing bar is clamped between the first clamping plate and the second clamping plate, the first clamping plate and the second clamping plate cannot reduce the opening due to the presence of the reinforcing bar. At the same time, the baffle hinders the movement of the ratchet and restricts the first clamping plate and the second clamping plate from expanding the opening. At this time, the clamping opening is fixed to avoid the clamping angle being changed by external force, which would cause the current to change and cause the welding instability problem.

[0033] A method for installing reinforcing bars in a seismic isolation pier, applied to the aforementioned equipment for installing reinforcing bars in a seismic isolation pier, comprises the following steps: S1. Use CAD technology to fully verify the spatial relationship between the lower support reinforcement and the pre-embedded sleeve and pre-embedded anchor bar of the seismic isolation bearing, and check for any collisions or positional conflicts. S2. Fabrication of the lower support reinforcement: Leave a straight section at the top of the vertical reinforcement. Position and mark the lower support, accurately measure and mark the plane position, outline and elevation control line of the lower support as the reference for the installation of the lower support reinforcement. S3. According to the design requirements of the construction drawings, install the bottom plate and the foundation reinforcement in sequence. First install the bottom layer reinforcement, then install the top layer reinforcement. Weld the reinforcement to ensure the stability of the reinforcement cage. S4. According to the markings of the lower support pier positioning line, accurately insert the prepared vertical steel bars into the steel reinforcement cage of the bottom plate and the foundation, and use welding to reliably fix the vertical steel bars to avoid displacement in subsequent concrete pouring or other construction stages. S5. After the installation of the bottom slab and foundation reinforcement and related concealed works have passed the acceptance inspection, concrete pouring construction shall be carried out. During the pouring process, a vibrator shall be used to compact the concrete to ensure that the concrete and reinforcement are tightly bonded. At the same time, care shall be taken to protect the vertical reinforcement to prevent it from shifting during the pouring process. S6. After the concrete of the base slab and the foundation has initially set, the lower support pier is laid out for the second time according to the original control axis and the design dimensions of the lower support pier. This provides a more accurate benchmark for the installation of the stirrups of the lower support pier and subsequent construction. The bending position of the upper end of the longitudinal steel bar of the lower support pier is marked, and the upper end of the longitudinal steel bar of the lower support pier is bent at ninety degrees. S7. Measure the position and level of the positioning plate, preliminarily install the bolts and sleeves on the positioning plate according to the design position, and pre-tighten them. Fix the anchor bars, sleeves, and positioning plate of the lower support pier. S8. Conduct a comprehensive inspection of the installation of the lower support pier reinforcement and related components. After confirming that all installation contents meet the design and specification requirements, complete the installation of the lower support pier reinforcement.

[0034] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A rebar installation device for a seismic isolation pier, comprising an AC welding machine (1), wherein a caster wheel (2) is rotatably connected to the bottom of the AC welding machine (1), a welding handle (3) is fixedly installed on the front side of the AC welding machine (1) via a cable, and a push handle (4) is fixedly installed on the back of the AC welding machine (1), characterized in that, Also includes: The current adaptation unit (5) includes a circular plate (51) fixed to the front side of the AC welding machine (1) via a cable. A current knob (53) is fixedly installed on the top of the circular plate (51). The current knob (53) is electrically connected to the welding torch (3) via a cable. A clamp for clamping steel bars is provided inside the circular plate (51). A rotating plate (54) is rotatably connected to the center of the circular plate (51). The rotating plate (54) is fixedly connected to the clamp and to the rotating part of the welding torch (3). The circular plate (51) is provided with a fixed engagement part (6) for the opening and closing angle of the positioning clamp.

2. The rebar installation equipment for a seismic isolation pier according to claim 1, characterized in that, The clamp includes a first clamping plate (52) fixedly installed inside the circular plate (51), a second clamping plate (55) fixedly installed on the outer wall of the rotating plate (54), and a contact plate (57) fixedly installed on the side of the second clamping plate (55) and the first clamping plate (52) facing each other.

3. The rebar installation equipment for seismic isolation piers according to claim 2, characterized in that, Two contact plates (57) are fixedly installed on the first clamping plate (52) and the second clamping plate (55). When the clamp clamps the reinforcing bar, the reinforcing bar is located between the two contact plates (57).

4. The rebar installation equipment for seismic isolation piers according to claim 3, characterized in that, The end of the second clamping plate (55) is fixedly installed with a fan-shaped rotating block (56). The inner arc surface of the fan-shaped rotating block (56) is fixedly connected to the rotating plate (54). The circular plate (51), the rotating plate (54), the current knob (53) and the fan-shaped rotating block (56) are coaxial.

5. The rebar installation equipment for a seismic isolation pier according to claim 4, characterized in that, The fixed engagement part (6) includes a ratchet (61) fixedly installed on the outer arc surface of the fan-shaped rotating block (56). The inner wall of the circular plate (51) is provided with a relief groove (62), and a baffle (63) is provided inside the relief groove (62) to prevent the ratchet (61) from rotating.

6. The rebar installation equipment for a seismic isolation pier according to claim 5, characterized in that, Multiple ratchet teeth (61) are provided and are distributed at equal angles along the outer arc surface of the fan-shaped rotating block (56). The baffle (63) is located on the rotation path of the ratchet teeth (61).

7. The rebar installation equipment for a seismic isolation pier according to claim 6, characterized in that, A spring plate (64) is fixedly installed on the side of the baffle (63). The spring plate (64) adopts a V-shaped structure and slides inside the circular plate (51) along the axis of the circular plate (51).

8. The rebar installation equipment for a seismic isolation pier according to claim 7, characterized in that, A cylindrical insert rod (65) is slidably connected inside the circular plate (51), and the outer wall of the cylindrical insert rod (65) is fixedly connected to the spring plate (64).

9. The rebar installation equipment for a seismic isolation pier according to claim 8, characterized in that, A helical spring (66) is elastically connected between the end of the cylindrical insert (65) and the circular plate (51), and the end of the cylindrical insert (65) extends from the top of the circular plate (51).

10. A method for installing reinforcing bars in a seismic isolation pier, applied to the seismic isolation pier reinforcing bar installation equipment described in claim 9, comprising the following steps: S1. Use CAD technology to fully verify the spatial relationship between the lower support reinforcement and the pre-embedded sleeve and pre-embedded anchor bar of the seismic isolation bearing, and check for any collisions or positional conflicts. S2. Fabrication of the lower support reinforcement: Leave a straight section at the top of the vertical reinforcement. Position and mark the lower support, accurately measure and mark the plane position, outline and elevation control line of the lower support as the reference for the installation of the lower support reinforcement. S3. According to the design requirements of the construction drawings, install the bottom plate and the foundation reinforcement in sequence. First install the bottom layer reinforcement, then install the top layer reinforcement. Weld the reinforcement to ensure the stability of the reinforcement cage. S4. According to the markings of the lower support pier positioning line, accurately insert the prepared vertical steel bars into the steel reinforcement cage of the bottom plate and the foundation, and use welding to reliably fix the vertical steel bars to avoid displacement in subsequent concrete pouring or other construction stages. S5. After the installation of the bottom slab and foundation reinforcement and related concealed works have passed the acceptance inspection, concrete pouring construction shall be carried out. During the pouring process, a vibrator shall be used to compact the concrete to ensure that the concrete and reinforcement are tightly bonded. At the same time, care shall be taken to protect the vertical reinforcement to prevent it from shifting during the pouring process. S6. After the concrete of the base slab and the foundation has initially set, the lower support pier is laid out for the second time according to the original control axis and the design dimensions of the lower support pier. This provides a more accurate benchmark for the installation of the stirrups of the lower support pier and subsequent construction. The bending position of the upper end of the longitudinal steel bar of the lower support pier is marked, and the upper end of the longitudinal steel bar of the lower support pier is bent at ninety degrees. S7. Measure the position and level of the positioning plate, preliminarily install the bolts and sleeves on the positioning plate according to the design position, and pre-tighten them. Fix the anchor bars, sleeves, and positioning plate of the lower support pier. S8. Conduct a comprehensive inspection of the installation of the lower support pier reinforcement and related components. After confirming that all installation contents meet the design and specification requirements, complete the installation of the lower support pier reinforcement.

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